Method for constructing concrete buildings.



A. PELTZER.

METHOD FOR OONSTRUGTING CONCRETE BUILDINGS.

Patented July 1, 1913.

APPLICATION FILED mun n, 1912.

2 snfims-susm 1 A. PELTZER.

METHOD FOR CONSTRUGTING CONCRETE BUILDINGS.

APPLICATION FILED JUNE 11, 1912.

1,066,436. Patented July 1, 1913.

2 SHEETS-SHEET 2 ALBERT PELTZER, OF CHICAGO, ILLINOIS.

METHOD FOR CONSTB'UC'IING CONCRETE BUILDINGS.

' To all whom 2t may concern:

Be it known that I, ALBERT PELTZER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Methods for Constructing Concrete Buildings, of which the follow-' ing is a specification.

The present invention relates to certain new and useful improvements in methods of constructing buildings and the like from concrete and similar plastic material.

A primary object of the invention is to simplify and improve upon the manner of constructing. concrete buildings, thereby both reducing the cost of construction and the time required for construction.

For a full understanding of the invention,

, reference is to be had to the following description and accompanying drawings, in which:-

Figure 1 is a vertical sectional view through a portion of a concrete building which is in the course of construction, and is being constructed in accordance with the present invention. Fig. 2 is a partial plan 7 view of one of the floor slabs. Fig. 3 is an enlarged sectional view through one of the floor lifting jacks, and Fig. 4 is a sectional view through a partially erected building, showing a modified form of the invention.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In carrying out the invention, the ground floor and foundation are constructed in the usual manner, and the floor slab for the second floor formed directly on top of the ground floor slab. If desired, the floor slab for the third floor may be formed directly.

on top of the floor slab for the second floor and so on, suitable openings being left in the various floor slabs to receive the columns. Each lower floor slab thus forms a centering for the upper floor slab, and the various floor slabs can be quickly and inexpensively formed one upon the other without the use of the usual expensive molds. With a large building, it will be understood that each slab may be cut up into a number of independent units for convenience in handling, should such be found necessary or desirable. After one or more floor slabs have been formed on the lower or foundation floor slab, the said floor slabs are raised bodily and vertically Specification of Letters Patent.

Application filed June 11, 1912.. Serial No. 103,042.

Patented Juiiig 1913.1

mounted upon the columns. Aftertlreilow floor slab has 'been raised to {the-required height it is suitably anchoredu Ii -the col? umns and the floor slab on top't ereof then 60, elevated to the required height. 'fItwill thus I be seen that two or more slabs areimoldedf on top of each other beforeraising anyone of them, the said slabs being elevated and. mounted in position after theyhave beenQalI-Q' lowed to set and harden. One form of apparatussuitableforlcai ry ng out the method of t nements shown 1n Flgs. 1, 2 and 3 ofjthefdrawingl The] foundation 1 and lowerf 'floorlslab 2 arena molded or constructed many suitable mm, f ner. The floor slabs 3, 4 and ,5 foiflthe s ecr ond, third and fourthflooi's of the building are arranged over the ground floor slab The floor slab 3 for thesecondgfldoifis as having been raised and anchored in posl tion upon the columns 6,whileftl e slab 4 is partially raisedfa'nd the floor slabk 1' 5 is shown as restinjgu "ii thefloor slabAcgi,

In forming each (iFthfifl bifslhbs 3,3 1ftlirdli80 5, suitable boxes or L upon the next lower' 'floor slab so that the," said lower floor slab would serveas a" tering and supportli Theseb'oxes airfares in 7 may be of anyfdesiretl type or. styl eyal isi though they areshown'inthe present inn: stance as arrangedtoIorin a grid of inter secting reinforcing" ribs, as shown more clearly by thedotted uaes'inriga If die sired, however? it will be understood that the floor slabsinaybeperfectly fiat,or maybe molded inanyecher suitablemannerfl The} floor slab forthe isecond floor would be molded upon fthe ground floor slab 2 and i would rest thereon in the sameinannerjn,

for the floor slab 4a're shownias still restingf ipa are insertedin fpositionflhe said reinforcing rods passing through thefloor slabs an ing adapte to have .the concrete molded about the same in the usual manner. In the present instance there are'six of these reinforcing rods 9 for each of the columns, and molds 10 are provided for enabling the columns to be formed as the floor slabs are raised.

I A jack -is provided for raising the floor slabs. This jack comprises an upper head 11 and a lower head-12 which are connected .by an operating rod 13, the ends of the rod I eye 19 W ich loosely receives one of the rods 9, thereby'holding the casing against rotation. A drive shaft 20 is ournaled in a bearing 21 formed in one side of the casing 18, the said drive shaft being connected by gearing 22 to the rod. -An angular head 23 is formed upon the outer end of the shaft 20, the said angular head being designed to engagea suitable handle for turning the shaft to operate the jack. The lower head 12 of the jack rests upon the upper floor slab and is provided with the hanger rods; .24; passing through the slabs. Nuts 25 are threaded upon these hanger rods and engage the bearing plates 26 under the respective vslabs.

In order to raise the floor slabs, the rod clamps 16 of the upper head 11 are tightened and the rod clamps 16 of the lower 1 I head 12 loosened. A suitable handle is then applied to the angular head 23 of the drive shaft and the said shaft rotated to turn the operating rod 13 and draw the two heads I per head" 11 and 12 toward each other. Since the upper head 11 has been anchored upon thev reinforcing rods 9 by tightening the, rod clamps 16, the lower head 12 of the jack will be raised and the floor slabs will be drawn upwardly with the same. 16 of the lower head 12 are then tightened to anchor the lower head 12 upon the reinforcing rods 9 and the rod clamps 16 of the upper head 11 loosened. The threaded operatingv rod 13 is then turned in the reverse direction to force the two heads 11 and 12 away from each other and move the up- 11 upwardly on the reinforcing rods 9. The upper rod clamps 16 may then be again tightened and the lower rodclamps 16 again loosened, preparatory to repeating v the first operation and a ain raising the The floor sla s may thus be floor slabs, 7

until the required height raised'step by step is reached. a,

being formed with right and left hand,

The rod clamps floor slab and the column mold 10 can be regulated as may be desired,'although the column mold 10 is rigidly connected with the lower floor slab so as to be ised with the same. The various floor sla s reprovided adjacent the column openings with a second set of openings '30 through which a chute or spout 31 is in erted, the lower end of the spout being inclined laterally and de signed to discharge into the flared upper end 10 of the column mold 10. As the floor slabs are raised, the brace or tie members 32 are applied to the reinforcing rods 9 for the column, and when the floor slabs have been raised a suitable distance, concrete is poured through the chute 31 into the column mold 10 so as to form a concrete column for the support of the floor slabs. It will thus be obvious that the reinforced concrete col- .umns are formed as the floor slabs are raised. When the lowermost one of the floor slabs has reached the requisite-height, a shoulder 6"" is formed upon each of the columns and the floor slab permitted to rest upon these shoulders; In Fig. 1 the floor slab 3 for the second floor is shown. as hav ing been raised the requisite resting upon. the shoulder 6;

height and as The remain ing floor slabs may then. be raised. still fur ther in the same manner, the columns being formed as the floor slabs-are raised, and the various floor slabs being anchored upon the shoulders 6 as soon columns by means of as they have reached the requisite height. It will be obvious: that all of the floor slabs may be formed; in successive- Iayers, one upon by a casting or support 4 the other, beforelany of the floor slabs are raised, or that fresh floor slabs made directly on top of floor slabs which have previously been raised, as maybe found most desirable.

A modification is; shown in. Fig. 4, in. which steel or cast iron columns are shown as employed, The foundation. 1 and ground floor 2 are constructed as in the former in? stance, and the floor slabs 3, 4 and 5 are also formed in. substantially thesame man-- ner. The column receiving openingsin the various floor slabs are somewhat" largerthan the diameter of the steel-columns 33,, in order' to pass freely over the shoulders formed by the flanges 3% at meeting ends of the column sections. openings of the floor reinforced by the thimbles or sleeves- 35.

The lifting jack is very similar to that The column receiving slabs are preferably previously described, and comprises an up per head 36 and a lower head 37, the said heads being connected by an operating rod 38 which has the opposite ends thereof provided with right and left hand threads respectively so that by turning the operating rods the heads 36 and 37 can either be drawn away or, moved toward each other. These upper and lowerheads 36 and 37 are formed with suitable openings loosely receiving the lifting rods 39, and are provided with rod clamps 40 adapted to engage the lifting rods. The lower ends of these lifting rods pass through the Various floor slabs and are provided with nuts 41 engaging the flanged lower ends 35 of the thimbles 35. A casing 42 surrounds the middle portion of the operating rod 38 and is provided with a perforated car 43 receiving one of the lifting "rods 39 to hold the casing against rotation. An operating shaft 44 is provided corresponding to the shaft 23 of the former jack, the said operating shaft being geared as in the prevlous instance to the operating rod.

In the operation of the jack, the lower head 37 thereof rests upon the .upper end of the column, and the upper rod clamps 40 are tightened while the lower rod clamps 40 are loosened. The shaft 44 is then turned to operate the rod 38 and force the upper and lower heads 36 and 37 of the jack away from each other. The upper head 36. is thus moved upwardly and causes the floor slabs to be lifted owing to the fact that the upper rod clamps 40 are tightened, while the lower rod clamps 40 are loosened. The lower-rod clamps 40 may then be tightened and the upper rod clamps 40 loosened preparatory to turning the operating rod 38 in a reverse direction and drawing the up er head 36 back to its original position. y againtightening the upper rod clamps 40 and loosening the lower rod clamps 40 the first operation may be repeated and the floor slabs raised another step. As soon as one of the floor slabs has The essential feature of the invention resides in the method of constructing concrete buildings, whereby the floor slabs are formed or molded on top of each other and then subsequently raised, this manner of forming the floor slabs greatly decreasing the cost of construction, since each lower floor slab forms a casing for the upper floor slab.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is

1. The method of constructing concrete buildings, which consists in first forming the floor slabs upon each other so that each lower floor slab forms a centering for the next upper floor slab, and subsequently raising the various floor slabs to the required height.

2.v The method of constructing concrete buildings, which consists in forming a se ries of floor slabs one on top of the other,

subsequently raising the floor slabs to the requisite height, and forming supporting columns as the fioor slabs are lifted. 3

3. The method of constructing concrete buildings, which consists informing a series of floor slabs one on top of the other, placing column members in osition, raising the floor slabs u on the co umn members, and anchoring t e various floor slabs at different heights upon the column members. In testimony whereof I afiix my signature in presence of two witnesses.

ALBERT PELTZER.

Witnesses:

E. N. MARKS, V. M. BIRMINGHAM. 

